Innovative Hand Exoskeleton Design for Extravehicular Activities in Space - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Innovative Hand Exoskeleton Design for Extravehicular Activities in Space write by Pierluigi Freni. This book was released on 2014-07-31. Innovative Hand Exoskeleton Design for Extravehicular Activities in Space available in PDF, EPUB and Kindle.
Innovative Hand Exoskeleton Design for Extravehicular Activities in Space
Innovative Hand Exoskeleton Design for Extravehicular Activities in Space - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Innovative Hand Exoskeleton Design for Extravehicular Activities in Space write by Pierluigi Freni. This book was released on 2014-06-23. Innovative Hand Exoskeleton Design for Extravehicular Activities in Space available in PDF, EPUB and Kindle. Environmental conditions and pressurized spacesuits expose astronauts to problems of fatigue during lengthy extravehicular activities, with adverse impacts especially on the dexterity, force and endurance of the hands and arms. A state-of-the-art exploration in the field of hand exoskeletons revealed that available products are unsuitable for space applications because of their bulkiness and mass. This book proposes a novel approach to the development of hand exoskeletons, based on an innovative soft robotics concept that relies on the exploitation of electroactive polymers operating as sensors and actuators, on a combination of electromyography and mechanomyography for detection of the user’s will and on neural networks for control. The result is a design that should enhance astronauts’ performance during extravehicular activities. In summary, the advantages of the described approach are a low-weight, high-flexibility exoskeleton that allows for dexterity and compliance with the user’s will.
Design and Control of a Hand Exoskeleton for Use in Extravehicular Activities
Design and Control of a Hand Exoskeleton for Use in Extravehicular Activities - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Design and Control of a Hand Exoskeleton for Use in Extravehicular Activities write by Bobby Lynn Shields. This book was released on 1993. Design and Control of a Hand Exoskeleton for Use in Extravehicular Activities available in PDF, EPUB and Kindle.
Innovations in Mechanical Engineering III
Innovations in Mechanical Engineering III - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Innovations in Mechanical Engineering III write by Jose Machado. This book was released on . Innovations in Mechanical Engineering III available in PDF, EPUB and Kindle.
An Unpowered Exoskeleton to Reduce Astronaut Hand Fatigue During Microgravity EVA
An Unpowered Exoskeleton to Reduce Astronaut Hand Fatigue During Microgravity EVA - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook An Unpowered Exoskeleton to Reduce Astronaut Hand Fatigue During Microgravity EVA write by Alan John Carey. This book was released on 2016. An Unpowered Exoskeleton to Reduce Astronaut Hand Fatigue During Microgravity EVA available in PDF, EPUB and Kindle. Astronaut hand fatigue during Extravehicular Activity (EVA) and EVA training is a critical risk in human space exploration. Improved glove designs over the past forty years have reduced hand fatigue, but limitations of the technology prevent major improvements to reduce hand fatigue. Therefore, a mechanism to assist astronauts by reducing hand fatigue was explored. Many organizations have already developed exoskeletons to assist astronauts, but all mechanisms developed required electrically powered actuators and control systems to enhance grip strength. However, astronauts already possess the strength required to actuate the glove; what is needed is a method to reduce fatigue without introducing electromechanical complexity. A passive mechanical system was developed as a proof-of-concept to test the feasibility of an unpowered exoskeleton to maintain static grip around an object. The semi- rigid nature of an inflated pressure glove provided an ideal substrate to mount a mechanism and associated components to allow an astronaut to release his/her grip inside the glove while maintaining attitude, as the mechanism will keep the glove closed around an object.Three prototypes were fabricated and tested to evaluate the architecture. The final two prototypes were tested on a real pressure suit glove at Final Frontier Design (FFD), and the third mechanism demonstrated attachment and basic operating principles. At University of California (UC) Davis, pressure glove analogs were fabricated from a baseball batting glove and polystyrene to simulate a real pressure glove without the risk of testing in a reduced pressure environment (i.e. a glove box). Testing of the third prototype showed a reduction in fatigue as measured by Maximum Voluntary Contraction (MVC) grip force over a 30 second period when the mechanism assisted gripping an object.
